An 80 percentile CMAT score is a decent score, but whether you can secure admission to IMS depends on several factors:

1. Specific IMS Campus: There are multiple IMS campuses with varying admission criteria and cut-offs.
2. Program Offered: The program you're targeting (PGDM, MBA, etc.) will have different eligibility requirements.
3. Category: Your category (General, OBC, SC, ST) will influence your chances.
4. Competition: The overall competition for that particular year and program will determine the final cut-off.

While an 80 percentile score increases your chances, it's essential to check the specific cut-offs for your desired IMS campus and program. Additionally, consider other factors like work experience, academic background, and GD/PI performance, as they might play a role in the final selection.

To improve your chances, research different IMS campuses, understand their admission process, and prepare well for the subsequent selection rounds.

hope this helps you!!